The platform 80 dm long and 60 dm wide is paved with rectangular slabs measuring 0.3 m and 0.2 m.

The platform 80 dm long and 60 dm wide is paved with rectangular slabs measuring 0.3 m and 0.2 m. How many slabs were used to cover the site.

Let’s translate the size of the site in meters. Since there are 10 dm in one meter, the length of the site is 8 m, and the width is 6 m.
Calculate the area of the site:
S = 8 * 6 = 48 sq.m.
Let’s calculate the area of the tile:
P = 0.3 * 0.2 = 0.06 sq.m.
Let’s calculate the required number of tiles:
N = S / P = 48 / 0.06 = 800 pcs.
Answer: 800 pcs.